Knitting-machine needle.



L. N. D. WILLIAMS. KNITTING MACHINE NEEDLE. APPLIO ATIQ 2 1 T 112 7E 63 m Mn 0% M 2 n w a P 4* 9 O 1 5 1H 0 v a .1

mvENToR LOUIS N. 0. WILLIAMS BY HIS ATTORNEY 5% m [m w o L. N. 11. WILLIAMS.

KNITTING MACHINE NEEDLE. APPLIOATION IILED SEPT.19, 1911.

-1,015,- 1*O9.l Patented Jan. 16, 1912.

2 SHEETSSHEBT 2.

m I N 1111 1155555 INVENTOR BY HIS ATTORNEY 37,5 M LOUIS mlwlLuAMaf m .w weeeem LOUIS N. 1). WiLLI AMs, or oeo irarnnivsrrnvanm, ASSIGNOIR. T soo'r'r &'WIILLIAMS,E

- moonronarnn, or CAMDEN, new Jnas rr, A CORPORATION ori nnwonnsnx.

KNITTING-MACHINE NEEDLE."

TociZZ-urhomr't may concern: t Be it knownthat LLOUIS N.-D.'l ILLiA-Ms, a citizen of the United States, and resident of Ogontz, Montgomery county, Pennsyl Vania, have invented certain Improvements in Knitting-Machine. Needles, 0f which the following is'a specification.

The objectof my invention is to provide an effective pivot'construction for the swinging needles employed in certain types of knitting machines, for instance in that'type of machine shown n the U. S: Letters -Patentof Robe -t-W. Scott, No. 88%,763. dated October 30,1906. This object I attain. in the manner hereinafter set forth, reference being had to the accompanying drawings, in which- I '.=Figure l is a side elevation of'a needle olthe 'typeto which my invention relates and illustrating one method of carrying out my invention; Fig. 2 is an elevation of the pivot portion of the needle on an enlarged scale;

" Fig; 3 is a transverse section of the same on the line (a-04. Fig. 2 Fig. at is a view similar to Fig. 2, but illustrating a preceding stage in tl ieformation of the pivot member of the needle; Fig. 5115 a transverse section of the same on'the. line Z Fig. t; Figs. 6, 7, 8,

9, 10 and ll are views similar'to.1*ig. 2, butillustrating other embodiments of my invention; Figlll isz'a transverse section on the line C-':. Fig. (3; Fig. 13 is a transverse section'on the line (Z al, Fig. ,10'; Fig. 14 is a longitudinalsectiononthe line c--e, Fig. 11, and F1g. 15 18 a transverse section on the line f-f, Fig. 11.

- Heretofore needles such as thoseto which my invention relates have been lffl'OVldQCl frame of the machine-but \v .accuratelyad usted on the stem ot the needle 3 with a "segmental bend in the stem of the needle to constitute a pivot member but in making these needles 1t:1s very dithcult to locate the pivot bend in accurate relation to the needle and to that end of the needle stem on which the cams act to impart ijnoveinentthereto. a 1

In .carrymg out my invention therefore I have providedthe needle with a pivot disk which not only affords a-substantial. Iiivot-al t bearing onthe Support for the needle in its Referring in the f rstin'stance to F Specification of Letters Patent.

ch can also be to 5 ofthe drawings, representsthe needle Patented Jan. 16,1912. 'Application filed September 19.412111. serial No. 650,125. Q,

per end, as shown at 3, although this latter formation is not absolutely necessary.

The pivot disk for the needle'coinprises two members l and 5, the member 4 consist ing of a cup-shaped disk with opposed slots ,6 in the flange of the cup and the memben-fi comprising a flat disk which can be fitted within the cupped disk r and base hood 7 overlying the shank 'ofthe needle, thezlatter being laid upon the base of the-eup-shaped disk 4 and passing through the slotsfi inthe these slots being of... such f width that t the shank of theneedle will lie freely within the same and those portions of. the needle shank which are contained within these slots9 are preferably notched or serrated on theirioppositesides, as shown at. 10 in Fig. 4.

flange of said disk, as shown in Figs. Z-and I 4. Ateach end of the hood"?- the inner. disk 5' is also slotted, as shown at 9 in Fig. 4c,

For securing the pivot member to theneedle. shank a sultable gig is employedyhaving means for properly positioning the; needle and other means for properly positioning the cupped disk 4 in respectto the needle. .{llhese parts being thus properly. positioned the disk 5 is placed within the flange of the disk" 4, the hood 7 of said disk .5 overlapping the shank of the needle and confiningthe same closely against the back ofthe disk-4; .The

two disks are then spot-welded together; as

shown at 1 1 in Figs. '2 and 3,by means-of a suitable form of electric welding appara-tus,

and. in thus welding thetwo-disks togetlier the metal of the walls of the slots 9.?\\-'ill. be

caused. to flow into the notches. or serrations;-

in i'hesides of then'eedle shank; as-show1i in lfigs. '2 and 3. thcrehvlirinly confining-to- Lether the needle shank-and its pivot inelnc-cr as against any movement}of one :inrespect to the other. ta any" clirectioinj the. lateral flaw ofthemetal o' fthe slotted walls bein" A uflicicnt to com pensatefor any slight incq a'liti'es in the 'ividtl'iof th'c-n'ec'dleshank which are likely to occur b cause 'ofwinequalirv in the i l. a shank composed j In that form of needle shownin Figs. 6

'. and 12 the shank of thencedlehasa log. 12 tonne-dthereon .which'enters a slot 112* in the hood I of the disk5,-this constraetion ilk nietatof Whiclisaid of the needle shank and the ends of the hood bearing against the shouldersat the ends of the reduced portion, so as to accurately position the disk 5 upon the needle shank preparatory to the welding, of

the disks together, or the proper positioning of theyneedle shank and disk 5 may be effected-by forming one portion of the hood 7 at an angle in respect tothe other portion and by bending the shank of the needle to conform to the hood thus formed, as shown in Fig. 8, or the hood may be spot welded to the shank of the needle, as shown at 14 in Fig. 9, the objection to welding the shank of the needle to the disk 5, however, being that the heat of the welding o eraktion affects the temper of the needle s an Instead of providing the hood on the disk 5 as previously described, said disk may consist of separate halves, as shown in Fig. 10, the confinement of the needle shank to the pivot member being effected by displacing the metal of each half of the disk at one or more points 15 and causing the metal thus displaced to overlap beveled notches formed in the sides of the needle shank, as shown in Fig. 13.

In the needle constructed in accordance with my invention perfect uniformity and rotundity of the pivot member will be presented, and when the disks constituting said pivot member are secured together and to he needle shank, the latter will be rigidly secured to the pivot member, and the variousparts will bear the proper accurate relation to one another necessary to the proper func-v tioning of the needles in machines of fine gage. The smoothness and uniform rotundity of the cupped disk are qualities which are difficult, if not impossible, to secure 1n a punched washer. f

The disk 5 is preferably made of softer metal than the cupped disk 4 so as to facilitate the displacement of the metal for-the formation of the hood 7 which is preferably slightly less in depth than the thickness of the needle shank so that the latter will be firmly clamped to the back of the disk 4 when the two disks have been properly se- 'cured together.

The disk 5 fits loosely within the cupped disk 4 but is fitted snugly to the needle shank so that the position of the disk 5 within the cupped disk 4 is dependent wholly upon the osition which the .needle shank occupies m the positioning jig in respect to sa d cupped disk 4, the latter being positionedse arate means so that any variationinfthe' width or thickness of the needle shank will not affect theproper localization of 1i.

cupped disk thereon. I p I 7 While I prefer to unite the two disks 4. and 5 by means of an electric weld because of the rapidity and cheapness with which the operation can be effected and because of the facility which it affords for restricting the weld to certain limited parts of the area of the disk, said disks may, if desired, be

secured together by soldering or brazing.

In that embodiment of my invention illustrated in Figs. 11, 14 and 15, the washer-5 is omitted, the needle shank 2 having beveled notches at each side which are engaged by the lateral spreading of webs 16 struck up from and folded back upon the back web of the en ped disk 4, as shown-in Fig. 14, the latera spreading of these webs 16 being efl'ected either by the operation of spot-welding them to the back web of the disk 4, as shown in Fig. 15, or by simple pressure upon them after the manner of the webs 15 inFig.v 10. I

I'claim:

- 1. A knitting machine needle having a pivot member consisting of a. cupped disk,

and a second disk secured within the cupped disk, and engaging the shank of the needle. 4

2. A knitting machine needle having a pivot member consisting of a cupped dlsk, and a second disk secured within saidcupped disk and having a portion overlying the shank of the needle so as to press the same against the back of the cupped disk;

3. A knitting machine needle having a.

pivot member consisting of a. cupped disk,

and a second disk secured wlthin said cupped disk, and having a portion overlying the shankof the needle so as'topress the same against the base of the cupped disk,

and also having a portion engaging theshank of the needle to prevent longitudinal movement of the same in respect to the pivot member. Y 4. A knitting machine needle having a.

pivot member consisting of a cupped d1sk,-,.

and a second disk engaging the shank of the needle and located within said cupped the two disks being connected together by spot-welding whereby the temper of the needle shank is not destroyed by the heat of the welding operation.

5. A knitting machine needle having a pivot member consisting of a cupped disk, and a second disk. secured within said cupped disk and having a hood for the reception of theneedle shank which is confined between the two disks.

6. A knittiiig machine needle having a pivotmember consisting of a cupped disk, and a second disk secured within said cupped disk and having a hood for the reof the needle shank which is con- 7 8. A knitting mzichine needle having a vj jfimd between the two disks, said second cupped disk'securedto the needle shank and disk; alsoihavingheyond' the hoods; portion constituting a; pivot member therefor, the -15 ldispl'zcedinto engagement with a notched outer face of the side of the cup constituting 5-;0'1' serrated rtionof theneedle shank. the bearing surface for the pivot member.

A knitting machine needle comprising In-testirnony whereof, I havesigned my ;adisk secured-to the needle shank, a cupped name to this specification, in'the presence of- 'disk carrying said first named disk, and two subscribing-witnesses.

. m'eans, for securing the latter to said cupped I LOUIS N. D. i0. 'diskQ'said means being independent of those Witnesses: v

' wherebythe. disk. is secured to theneedle KATE A; BEADLE, HAMILTON-D. 

